

But isn’t most of that client-side processing? Can’t I request a vanilla generic page and once it is in my browser to process it to shape it into the window size and extensions I want? Even if it is an adblocker: serve me the ad, I’ll block it internally. But I suppose that for dynamic pages with js requests this would become hard to do.
who is the centermost centrist from your pov? left and right means nothing without reference points. It’s like saying cold and hot instead of using specific temperatures like boiling point and freezing point.
And this is without saying that left-right is a 1D projection of a sum of positions in many dimensions.